Temporal integration of loudness as a function of level.
Temporal integration of loudness as a function of level.
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DOI：
10.1121/1.411567
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发表时间：
1995-05
期刊：
影响因子：
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通讯作者：
M. Florentine;S. Buus;T. Poulsen
中科院分区：
文献类型：
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作者：
M. Florentine;S. Buus;T. Poulsen
对1 khz音调和宽带噪声的响度的时间整合进行了广泛的水平比较。使用自适应、两间隔、两种选择的强迫选择程序，测量5、30和200毫秒刺激产生相等响度所需的绝对阈值和水平。噪音的等级从5到80分贝，音调的等级从5到90分贝。对6名听力正常的听者的结果表明，时间整合量（定义为同样大声的5毫秒和200毫秒刺激之间的水平差）随水平呈非单调变化。时间积分的平均值在阈值附近约为10-12 dB，当5ms音约为56 dB， 5ms噪声约为76 dB SPL时，时间积分峰值为18-19 dB；对于音调，时间积分减少到10 dB，对于声级在100 dB左右的噪声，时间积分减少到13 dB。音调的数据与大多数现有数据符合得很好。噪声的数据都在以前的少数数据的范围内，但电平的影响与以前的研究有所不同。目前的结果表明，响度的增长可能至少部分地与基底膜的非线性输入/输出函数相一致。
Temporal integration of loudness for 1-kHz tones and broadband noises was compared over a wide range of levels. Absolute thresholds and levels required to produce equal loudness were measured for 5-, 30-, and 200-ms stimuli using an adaptive, two-interval, two-alternative forced-choice procedure. Levels ranged from 5 to 80 dB SL for noises and from 5 to 90 dB SL for tones. Results for six listeners with normal hearing show that the amount of temporal integration, defined as the level difference between equally loud 5- and 200-ms stimuli, varies nonmonotonically with level. The average amount of temporal integration varies from about 10-12 dB near threshold, to a peak of 18-19 dB when the 5-ms tone is about 56 dB and the 5-ms noise is about 76 dB SPL; the amount of temporal integration decreases to 10 dB for tones and 13 dB for noises with levels around 100 dB SPL. The data for tones are in good agreement with the majority of existing data. The data for noises are within the range of the few previous data, but the effect of level differs from that obtained in previous studies. The present results indicate that the growth of loudness may, at least in part, be consistent with the nonlinear input/output function of the basilar membrane.